Theyll stomp and slosh through the day with dependable comfort in the protective Bogs Kids Rain Boots Big Geo boots. Pull-on waterproof boots designed in a rubber upper with linear graphics along the shaft. 100% Waterproof. Constructed with 7mm Neo-Tech waterproof insulation. DuraFresh natural bio-technology activates to fight odors. Bogs Max-Wick evaporates sweat to keep feet dry. Easy on handles. Durable, hand-lasted rubber over a four-way stretch inner bootie. BLOOM, algae-based EVA footbed that helps clean polluted water habitats. Self-cleaning rubber outsole. Comfort rated to -30F/-34C. Reflective temperature rating mark on heel. Please be advised that a white wax film may appear on the surface of the rubber boots and the brand states that it can be wiped off with a damp cloth. This "blooming" effect is not a defect. Blooming is caused when the boots are exposed to extreme temperatures or temperature swings and the wax helps prevent the rubber from weathering.